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I build a lot of engines, and my customers 19 times out of 20 send me this flywheel " McLeod 460122" which is a 168 tooth 22 pound "0" balance flywheel. It has a provision for a bolt on weight to make it external balance. Heres the problem, with no weight in internal balance form its 32 grams out of balance from 0 ZERO balance, now of course no one wants to take responsibility, Summit, or Mcleod, and just for reference its everyone of these I've seen come through my shop. So if you've bought this flywheel and its not so smooth, you know where you problem is.
Mark....I believe you fix that problem by balancing it,...correct?
Yes, your was rebalanced, but what about the guy who buys that and puts it behind his internal balance engine thinking its 0 balanced? The new America................
I build a lot of engines, and my customers 19 times out of 20 send me this flywheel " McLeod 460122" which is a 168 tooth 22 pound "0" balance flywheel. It has a provision for a bolt on weight to make it external balance. Heres the problem, with no weight in internal balance form its 32 grams out of balance from 0 ZERO balance, now of course no one wants to take responsibility, Summit, or Mcleod, and just for reference its everyone of these I've seen come through my shop. So if you've bought this flywheel and its not so smooth, you know where you problem is.
I had my McLeod 22 lb. flywheel and pressure plate assembly balanced, and it works perfectly! I didn't ask the machinist how far out the flywheel was initially.
John
It makes no sense to me that they drill holes to mount balance plates........and don't realize that those holes now make the plate lighter on that side, without compensating for it on the opposite side. But....I know nothing about balancing a flywheel. See pictures below.....the holes at 12:00 o'clock are the holes for mounting balance plates....the holes at 6 o"clock and small hole at about 8:00 o'clock are the holes Mark Jones drilled to balance this flywheel.
It also could be that the amount of "out of balance" this causes is acceptable to some people. Its not for Mark Jones, and one reason why I know I have a better engine than others.
Last edited by Shovels and Vettes; Apr 9, 2023 at 06:27 PM.
That particular external balance flywheel is designed to be field balanced. The add-on holes are for convenience only. You will add your balance weight and all the rest of the rotating components. The flywheel manufacturer has no control over the rest of the rotating assembly so he can't get any pre-balance weight target before it leaves his production facility.
Any "external balance" engine requires mandatory field balancing if not done as a total assembly before being shipped out. I think that is what Mark is saying here. Not bad parts, just unaware customers.
That particular external balance flywheel is designed to be field balanced. The add-on holes are for convenience only. You will add your balance weight and all the rest of the rotating components. The flywheel manufacturer has no control over the rest of the rotating assembly so he can't get any pre-balance weight target before it leaves his production facility.
Any "external balance" engine requires mandatory field balancing if not done as a total assembly before being shipped out. I think that is what Mark is saying here. Not bad parts, just unaware customers.
I disagree.....McClouds sells this as a zero balance flywheel......meaning it can be installed the way it is, without adding weights. I read this on THEIR website...on the instructions that came with it....I am not making it up. McCloud says its zero balanced for internally balanced engines....like my SBC, but holes are provided for externally balanced engines. But it essentially cannot be balanced as shipped....with four large holes drilled in it. THAT is what Mark is saying.
Last edited by Shovels and Vettes; Apr 10, 2023 at 11:44 AM.
Mcleod Flywheels
